Adaptive indoor positioning algorithm using auto-calibration

This paper describes an adaptive algorithm to calculate the position of wireless mobile devices in a heterogeneous environment such as a building, house or flat. Because the environment is not static, it is very important to measure the signal strength of wireless communications periodically in order to take into account all the modifications in the indoor area. These continuous measurements are taken between Wi-Fi Access-points. Such an algorithm allows to keep a good level of accuracy avoiding a degradation of the calculated position over the time. Our adaptive algorithm has been integrated into fault tolerant, redundant and scalable architecture.